Omega HHTFO, User Manual

Page 1: ...1 HHTFO HHTFO ...

Page 2: ...2 ...

Page 3: ...N INTERFACE 15 5 USING TEMPERATURE PROBES 16 5 1 CAUTION 16 5 2 DESCRIPTION 16 5 3 WARNING 17 6 SERIAL COMMUNICATION DESCRIPTION 18 6 1 USING HYPER TERMINAL IN WINDOWS 18 6 2 RS 232 HELP MENU 18 6 3 DETAILED DESCRIPTION OF RS 232 COMMANDS 19 6 4 TYPICAL TEMPERATURE READING SEQUENCE 21 7 ERROR CODES 22 8 FOB100 SOFT SOFTWARE PACKAGE 23 8 1 GETTING STARTED WITH FOB100 SOFT 23 8 1 1 Hardware and soft...

Page 4: ...teries This product does not contain any user serviceable parts Opening this precision instrument will void its warranty and disturb its factory calibration Always seek servicing from an authorized Omega Engineering service depot Fiber optic probes are fragile and will break if the bending radius becomes less than 1cm even temporarily Probe breakages are not covered under the standard Omega warran...

Page 5: ...ackage which is ideally suited for portable applications This model does not feature an analog output option the Omega model FOB is recommended if this option is required The standard configuration is offered with an RS 232 interface In addition a large LCD graphical display makes it easy to see the temperature for one channel supported by the HHTFO either in Celsius o C or in Fahrenheit o F even ...

Page 6: ...splay of temperature readings as well as various user Graphical resolution 160 x 160 pixels 6 VDC Use only the provided universal power module User supplied 4 AA size batteries Battery compatibility AA alkaline Ni Cd and Ni Autonomy of up to 5 hours Note Batteries need to be replaced or recharged at least once a year The HHTFO does not charge batteries a charger must be used A small internal batte...

Page 7: ...uded with extension cable Extension Cable Other options and configurations are also possible contact Omega for more information thermometer comes factory calibrated A re calibration is recommended every 12 months or whenever performance verification indicates that calibration is necessary NIST traceable calibration certificates are available All calibrations are performed at the factory Contact yo...

Page 8: ...various capacity up to 1Gbyte SD card reader USB interface USB serial adapter cable FOB100 SOFT software package CD Carrying case for HHTFO and accessories Make sure all listed items have been received and are in good condition Note any evidence of rough handling in transit immediately report any damage to the shipping agent Should a part be missing or damaged please contact your distributor immed...

Page 9: ...ady install fresh AA alkaline or rechargeable batteries This figure shows the main view of the HHTFO along with the top and bottom views 3 1 Installing batteries You will find the battery access port at the bottom of the HHTFO Insert 4 fresh AA batteries or connect the supplied 6VDC universal power supply If using rechargeable batteries make sure they are completely charged The following illustrat...

Page 10: ...ed on the top of the HHTFO Remove the dust cap on the probe connector If supplied with the HHTFO connect the short extension cable and from now on leave it connected es to the fiber optic connector found on the HHTFO unit itself are minimized Insert the connector from your probe into the sensor connector of the HHTFO Make sure the two mating parts are properly aligned and twist the connector clock...

Page 11: ...E The display is organized in 3 logical regions The top portion gives general information to the user about the unit current status such as battery condition RS232 port connection status time and date presence absence of a SD The middle portion displays the temperature value Sometime other values can be displayed here The bottom portion shows two icons that can be invoked to further configure your...

Page 12: ...t can be turned on and off by keeping the Esc key pressed while temporarily pressing the OK key Note that the backlight has 3 levels 1 off 2 dimmed level and 3 full on you can scan between these 3 multiple times while keeping the Esc key pressed When running from the battery the backlight is automatically turned off after 1 minute of keypad inactivity This menu can be selected by pressing the OK k...

Page 13: ... is a fixed file extension Furthermore file sizes are limited to 65500 lines to ease their import to spreadsheet such as Microsoft Excel When the 65500 limit is reached a new file is open using the next available file sequence number Typical file content may look like this A time stamp accompanies each temperature entry 24 hour time format File format is tab delimited The logging menu includes 3 s...

Page 14: ...rmally be followed A formatted and unlock SD card must be inserted in the HHTFO Make sure there is enough free space on it files can be deleted if required using your PC Make sure the following parameters are corrected set you may have to go to the appropriate sub menus to set these parameters o Select the desired sampling rate from the Rate sub menu o Enable logging must be ON from the Enable sub...

Page 15: ...age ranging from 5 2 to 6 8VDC the center pin is the contact If you accidentally use a DC supply that has a voltage outside this range max of 28 VDC this should cause no harm to the HHTFO The internal batteries cannot be charged by this module to charge your batteries you need to remove them from the HHTFO and use a separate charger alternatively you can also use non rechargeable batteries size AA...

Page 16: ...res good cleaning Occasionally clean the inside of the bulkhead connector attached to the thermometer with a wipe or cotton swab dipped in alcohol 2 5 mm mini foam swabs work best 0 For very dirty connectors acetone can also be used but should be used very carefully as it is a very strong solvent Care should be exercised so you do not apply any on plastic materials etc 5 2 Description The optical ...

Page 17: ...olvents and fuel oils can cause problems for silicone rubber Omega Engineering also manufactures probes that have their tips made of epoxy Just like silicone epoxy resin is resistant to a large number of chemical aggressors strong acids or alkali may damage it especially at high temperature and or if used for extended periods of time Contact your distributor for additional chemical compatibility i...

Page 18: ...OM port if you are planning to use another port than COM1 in the box called Connect using Click OK 3 Then the COM1 Properties window will come up As indicated above and as shown in the figure at right set the port parameters to 9600 Baud 1 Stop Bit and No Parity Click OK 4 You are ready to go Type h E to test your setup see below Warning the characters that you enter are not echoed to you 6 2 RS 2...

Page 19: ...his command forces an actual temperature reading j for channel i any resulting offset will be applied to all future measurements for that channel This is useful to compensate for small temperature deviations that may occur between sensors A maximum offset of 5 o C is recommended if it is required for you to force a larger offset your thermometer probably requires a new factory calibration consult ...

Page 20: ... in o C or o F unit as specified by the u command Ex t4 E will return the temperature for channel 4 t E with the HHTFO101 thermometer will return 24 3 CR The t command is also available in a special ta version that can be useful for continuously and automatically monitoring all enabled channels This special mode is recommended when automatically acquiring temperature readings with a suitable data ...

Page 21: ...sists in using the ta command preferred while the second sequence would be a The host computer should send the t or t i command followed by a E character b The thermometer responds by echoing the requested temperature values as indicated above the transmission is terminated by a character c When the character is received it is suggested to immediately terminate the dialog session by having the hos...

Page 22: ... Hz Temperature out of maximum instrument limits or no signal Err5 Argument out of range Err6 Unrecognized command The exact analog output behavior is a function of the command o see previous Chapter Note that these error codes are not applicable when using the FOB100 SOFT software package This high level software package is programmed to automatically handle all types of errors as outlined in the...

Page 23: ...er 8 1 2 Installing FOB100 SOFT You must have at least one or more properly installed FOB100 or HHTFO thermometer unit s 1 Start Windows and make sure you are not running any other Windows program 2 By inserting the CD in your computer the SETUP application should automatically start if not manually start it 3 Follow the instructions that are displayed 4 Restart your computer 8 2 A quick tour of F...

Page 24: ...OFT is now properly installed and ready to use 8 2 1 Working with the Configuration Window FOB100 SOFT starts with the Acquisition window active as shown in the figure above To switch to the System Configuration window you need to click on one of the instrument names that have been detected for example by clicking on Omega FOB you will get the following window ...

Page 25: ...g alarm limits When one of more alarms are detected a message is given at the bottom of the main window must be in Acquisition mode For a given channel alarms are monitored only when its corresponding Chart or Log checkbox is checked in the Configuration window pane Alarms are monitored only when Acquisition is active Analog Outputs FOB100 series only Allows configuring the analog output parameter...

Page 26: ...ton 5 Repeat the same procedure for the other channels that you want to modify 8 3 Acquiring and viewing temperature data Once all your thermometers are properly connected and configured you may want to log data to a file or to display their values on screen A number of tools are available for that To view or acquire data the Acquisition pane must be active 8 3 1 Logging temperature data to a file...

Page 27: ...ould look like this Notes 1 If a column shows this means that this column is too narrow to display the data use your mouse to widen this column 2 If you open a logging file during acquisition the Excel window is not refreshed as the acquisition is taking place To get a more recent version of the file close the Excel program and start Excel again 3 A value of 999 xx indicates that no reading is ava...

Page 28: ...s stopped or your disk becomes full 8 3 2 Viewing temperature data Temperature values can be displayed on your computer screen in a number of ways Click one of the four Chart button to active one or more of these windows Note that more than one window type can be displayed simultaneously in addition you can log temperatures to a file independently from these display windows Note that each of these...

Page 29: ...ote that any channel that has its Chart checkbox unchecked in the main window will not be shown If an alarm is active for a channel the corresponding thermometer numbers will change color blue for a low temperature alarm or red for a high temperature alarm 8 3 2 3 Displaying digital values To display digital temperatures click on the Digital button The following window will appear The size of this...

Page 30: ...e to use the console The Console should be used only by experienced users The console which can be invoked through the Window and then Open Console from FOB100 SOFT main window menu bar is useful to manage each Omega thermometer in details Take note that the console can only be open when no temperature acquisition is taking place It can be useful also to understand problems and malfunctions that a...

Page 31: ...as a reminder of all available commands for this specific instruments For a complete description of all commands refer to Section 6 3 above 8 5 FOB100 SOFT functions This section explains in details each one of the functions provided by the menus of the FOB100 SOFT software package This Section only gives a brief overview of the commands that are possible for operational details please refer to th...

Page 32: ...pen Console Open Console can be very useful for developers and other users who want to interrogate the internal parameters of an Omega thermometer It should be used only by experienced users 8 5 2 2 View Trends Select this menu item to open a window that gives you a graphical representation of your temperature readings as a function of time Up to 64 curves can be simultaneously displayed The sampl...

Page 33: ...33 ...

Page 34: ...34 ...